This report presents the conceptual design of a new European research infrastructure
EuPRAXIA. The concept has been established over the last four years in a unique …

Modern electron linear accelerators are often designed to produce smooth bunch
distributions characterized by their macroscopic ensemble-average moments. However, an …

X-ray free-electron lasers (XFELs) provide femtosecond X-ray pulses with a narrow energy
bandwidth and unprecedented brightness. Ultrafast physical and chemical dynamics …

A tunable plasma-based energy dechirper has been developed at FLASHForward to
remove the correlated energy spread of a 681 MeV electron bunch. Through the interaction …

X-ray free-electron lasers (XFELs), with pulse durations of a few tens of femtoseconds or
shorter, are cutting-edge instruments capable of observing structure and dynamics at the …

Linear accelerators delivering high brightness electron beams are essential for a number of
current and proposed accelerator applications, such as free electron lasers (FELs). In this …

The first experimental study is presented of a corrugated wall device that uses wakefields to
remove a linear energy correlation in a relativistic electron beam (a “dechirper”). Time …

The generation of attosecond, highbrightness x-ray pulses is a matter of great interest given
their applications in the study of ultra-fast processes. In recent years, the production of x-ray …

The extreme electromagnetic fields sustained by plasma-based accelerators could
drastically reduce the size and cost of future accelerator facilities. However, they are also an …

A tunable energy-chirp compensator was used to remove a correlated energy chirp from the
60-MeV beam at the Brookhaven National Laboratory Accelerator Test Facility. The …